Lewis Hamilton completed his fourth day of pre-season testing today at the Circuit de Catalunya in cold and wet conditions. His mileage today of 242 km takes his total to 1513 km with the new F1 W04. The morning programme focused on making the most of opportunities for dry running before the rain began in earnest Lewis was able to complete an 18-lap run (16 timed laps) on the medium tyre just before midday In the wet conditions in the afternoon, the team focused on systems checks and tyre evaluations

Testing will resume at the Circuit de Catalunya on Thursday 28 February for the final pre-season test of 2013. Lewis Hamilton The conditions today meant that we didn't complete as many laps we would have done in the dry but we have gone through the test items that we wanted to achieve this week. We have been working on our consistency over long runs and we managed one run this morning on dry tyres; the car felt okay but the conditions were also very cool, so we cannot draw too many conclusions. Like I said in Jerez, I can feel that we have a good foundation with this car but there is still a lot to learn and we know that the name of the game is to improve our downforce. From a personal point of view, my relationship with the team is growing all the time and it's going really well. I'm happy working with the guys, we are working in the right direction together and I'm pushing to extract the most from the team, just like they are with me. Ross Brawn Overall, we've had a good week in Barcelona and achieved the programme that we set ourselves for this second test. The rain today was a little unfortunate; however we made the best of the conditions and were still able to take some useful data out of the day. Nico and Lewis are becoming more familiar with the car and its behaviour as each day progresses, and Lewis is settling into the team very well. Both drivers are providing excellent feedback which is pushing the development of the car both here and at the factory, and it is very rewarding to see their enthusiasm and commitment. We now have just four days of testing left until the first race in Australia, and a lot of work will be done before we return to Barcelona next week.  Friday testing times

1.  Lewis Hamilton        Mercedes        1m23.282s            52 laps2.  Jenson Button         McLaren         1m23.633s  +0.351    70 3.  Jean-Eric Vergne      Toro Rosso      1m24.071s  +0.789    80 4.  Jules Bianchi         Force India     1m25.732s  +2.450    96 5.  Esteban Gutierrez     Sauber          1m26.239s  +1.957    616.  Giedo van der Garde   Caterham        1m27.429s  +4.147    50 7.  Felipe Massa          Ferrari         1m27.563s  +4.281    80 8.  Mark Webber           Red Bull        1m27.616s  +4.334    64 9.  Max Chilton           Marussia        1m29.902s  +6.620    5110.  Romain Grosjean       Lotus           1m34.800s  +11.518  4111.  Valtteri Bottas       Williams        no time             2312.  Pastor Maldonado      Williams        no time             13

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